Battery Notifier BT <Android9

23.4K reviews
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About this app

For Android 9 and under - Colored status bar numbers with low and full alarms

Green, blue, orange and red status bar numbers can be customized to display at the percentages you want. Optional yellow smiley face charging icons. Low & full battery notifications.

(For Android 10 through Android 12 download Battery Notifier BT 2020.)
(Android 13 and up is not officially supported, but it should still work.)

As of Nov. 1, 2022, due to circumstances beyond our control, we have pulled the Pro (paid) version of this app Battery Notifier Pro BT from the Google Play app store . In addition, we will only be able to offer support for those who previously purchased the Pro app or downloaded the free app for those who are using Android 12 and below.

UPDATE: 12/1/2023
The free versions of both apps will remain on Google Play until Google pulls them which may be soon since we are unable to update the apps. After Google pulls them from the Play store, contact us at if you wish to obtain a clean apk of the file if you wish to reinstall it or install it on another device.

Battery Notifier BT will not stop working on its own. MOST Android manufacturers have aggressive battery saving settings which shut down apps running in the background by default. We suggest turning off all battery saving/power saving settings. Also, find the Android setting on your device to "optimize" the battery for apps and TURN IT OFF for Battery Notifier BT. If you update to a newer version of Android, you need to make these changes again after the update. The update may also add a new setting called "Duraspeed" which also shuts down apps unless you make an exception.

For help with specific devices go to:

For other problems try: or e-mail us at

NOT FOR BLUETOOTH: BT does NOT stand for Bluetooth, and this app has nothing whatsoever to do with Bluetooth. (BT is short for "Big Text" the original name of the app.)

NOTICE: The original Battery Notifier BT is NOT 100% compatible with Android 10 and up. However, if you have Android 10 or higher, and you still want colored numbers in the status bar, the original Battery Notifier BT MAY or may not work on your device. The only way to know for sure is to try it and see.

If your device has Android 10 through Android 12, Battery Notifier BT 2020 is optimized for those devices. It includes white only notifications in the status bar required by Google going forward.

MALWARE NOTICE: Google Play is the only place authorized to carry our apps. If you installed an apk from some other site, it might have malware.

Privacy concerns? We collect no information from you!
Only three permissions and no ads!

Features in Battery Notifier BT (For Android 9 and under)...
* Arial font in official Android colors (optional black background)
* Original green color option (transparent icon only)
* Low and Full battery alarms with repeat intervals
* Mute alerts (Postpone alarms)
* Battery temp (C or F) and health in dashboard
* "Plugged/unplugged since" info in dashboard (Plug in charger first)
* Charging icons - Smiley or battery level
* Full charge icons - Smiley with sunglasses or battery
* Display colors you want at the levels you want

Battery Notifier BT is one of the lightest apps available that puts the least possible strain on your battery.

Post at
Will original Battery Notifier work on Android 10 and up?
Updated on
Jun 7, 2017

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

22.2K reviews
A Google user
May 20, 2019
Actually works! I set the full & lower limits & sure enough, the colors changed & the alarm went off! Both low charge & full charge alarms work great! I'm not one of those people who likes to let my gas tank go below half or my phone charge go below 25. Simple, basic controls & function. Easy to set & turn alarms off. First low power warning app I've tried that actually works as it says.
11 people found this review helpful
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Raptor Jesus
February 2, 2022
Works perfectly, the app notification itself shows the power which is genius, its very accurate, easy to use, and can give notifications when power is low which is amazing. Personally i have relatively cheap headphones that work perfectly except one minor problem: when at low battery they blare into my ears like an air raid siren. This app was able to fix that because i was able to set a notification that its at 25% while the headphones go off at 20%. Great app had no problems with it
11 people found this review helpful
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Lady Alex
August 15, 2020
I've always liked this app, but was very disappointed to find out that its not compatible with my new phone that uses Android 10 platform. It only works with Android 9 or less. But I think I found the version that will work with my phone. The icon for the program looks almost identical except it's in black and white. I hope this is the same developer because this is a decent app!
36 people found this review helpful
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August 16, 2020
Yes, Battery Notifier BT Free 2020 is also made by Shkil/larryvgs. Starting with Android 10, Google decided notifications in the status bar could no longer be multi-colored, and they could only be white. We were not allowed to update the previous app, and had to create a new 2020 app with white only notifications.

What's new

Added Send Feedback option with new support email address